This project consists of a minecraft 1.20.2 Bukkit plugin that only drops a select set of items upon death.
These are the following items dropped at death:

IRON_BLOCK  
IRON_INGOT  
IRON_ORE  
IRON_NUGGET  
GOLD_BLOCK  
GOLD_INGOT  
GOLD_ORE 
GOLD_NUGGET  
DIAMOND 
DIAMOND_ORE  
DIAMOND_BLOCK 
EMERALD  
EMERALD_ORE  
EMERALD_BLOCK  
LAPIS_LAZULI  
LAPIS_ORE  
LAPIS_BLOCK  
REDSTONE  
REDSTONE_ORE  
OBSIDIAN  
QUARTZ  
QUARTZ_BLOCK  
WITHER_SKELETON_SKULL